noun pl. cannons -·nons or cannon -·non

1. 1. a large, mounted piece of artillery; sometimes, specif., a large gun with a relatively short barrel, as a howitzer
   2. an automatic gun, mounted on an aircraft
2. a part on a bell by which it is hung
3. cannon bone
4. Mech. a hollow tube within which a shaft revolves independently of the outer tube
5. Billiards, Brit. carom

Etymology: ME & OFr canon < It cannone < canna: see cane; in cannon & , , altered < carom

transitive verb

1. to attack with cannon fire
2. Brit. to cause to carom

intransitive verb

1. to fire cannon
2. Brit. to make a carom